After repetitive exposure to this propaganda (repetition priming), the people were beginning to believe and stand up for what each respective government had been flashing before their eyes, without them even knowing it.

https://sites.psu.edu/psych256sp18003/2018/03/04/h/

The fact of being exposed to propaganda and misinformation, repeatedly and continuously, has a psychological affect over time.

The individual must not be allowed to recover, to collect himself, to remain untouched by propaganda during any relatively long period, for propaganda is not the touch of the magic wand. It is based on slow, constant impregnation. It creates convictions and compliance through imperceptible influences that are effective only by continuous repetition. It must create a complete environment for the individual, one from which he never emerges.

Propaganda, Jacques Ellul

The simulacrum is never what hides the truth - it is truth that hides the fact that there is none. The simulacrum is true.

Simulacra and Simulation, Jean Baudrillard.

Welcome to hyperreality, sit back and enjoy the ride!